Edge-setting machine



March 21, 1939. R. IBOYSON ET AL 2,151,498

EDGE-SETTING MAC HINE1 Filed July 23, 1936 2 Sheets-Sheet l Z8,Iwvewiomr 3 31 W 6. W

Patented Mar. 21, 1939 UNITED STATES EDGE- SETTING MACHINE E. RichardBoyson, Lynn, and B. Herbert Boyson, West Boylston, Mass.

Application July 23, 1936, Serial No. 92,120

2 Claims.

Our present invention relates to machinery for use in the manufacture ofboots and shoes, and more particularly to a novel and improved edgesetting machine adapted to set or burnish edge portions of the soles ofboots and shoes.

Heretofore, it has been customary to provide edge setting machineshaving rapidly rotating, or oscillating, edge setting tools which movedin a fixed path, against which tool the operator holding the shoe mustpress the sole edge and move the shoe around from one side of the heelbreast thru the forepart, toe portion, and back to the opposite edge ofthe heel breast, thus completing the edge setting operation.

As the sole edge is of uneven contour, particularly where the shankportion of the shoe is concerned and particularly, also, in womenshighheeled shoes where a high arch is designed on the shoe, considerableskill and a high degree of pressure is necessary on the part of theoperator to hold the sole edge into contact with the rapidly oscillatingor rotating edge-setting tool during this entire operation.-Furthermore, great difficulty has been experienced heretofore in soholding and conforming the uneven sole edge of the shoe itself to thefixed path of movement of the setting tool as the operator is forcingthe sole edge with great pressure against the tool and is operatingunder tension at all times, and a slight false movement or displacementwill mar and injure the shoe upper and even ruin the shoe, as. well asinvolve danger to the operator. Our present invention is directed toovercome the difficulties above noted, and instead of having theoperator force the uneven and varying contour of the shoe into the fixedpath of the edge tool, we provide a construction wherein the edging toolwill automatically vary its path to follow the uneven contour of thesole edge, at least to such a considerable extent as to eliminate thedifficulties above noted where a fixed path of movement of the edge toolis involved.

In carrying out our present invention we provide means automaticallyactuated, whereby the edge setting tool, preferably of the oscillatingtype, is freely movable to vary the path of movement of the oscillationsand, hence, to follow the uneven contour of the sole edge held againstit. This improved method not only insures a more even setting of theedge but simplifies the strain and Work on the operator, as instead ofbeing compelled to follow the fixed path of movement of the edge settingtool and while holding the shoe under great strain and pressure againstit, the tool follows the more-or-less wavy path of the shoe sole andmuch less pressure is needed by the operator in completing the edgesetting operation.

It will be appreciated by those skilled in the art that the edge settingtool is necessarily guided by a very small flange only slightlyoverlapping the sole edge and, therefore, the importance of ourimprovement which eliminates the danger of the flange and tool slippinginto its guiding contact with the sole, resulting in injury to the shoe,or operator, or both, is obvious.

A still further feature of our invention and which is advantageouslyapplicable either to our present improved type of edge setting machine,or to any of the present Well-known standard types of oscillating edgesetting machines, consists in our novel provision of means for movingthe edge setter in an eccentric are relatively with the work. Thisfeature enables us toperform the edge-setting action in a much smootherand less bumpy, jumpy, or hammerlike action, whereas in former machinesthe edge setter was moved in an arc at an equal distance right and leftof the point of contact of the sole edge with the edge setting tool.

In such prior machines, with the operator holding the sole edge withmore strain and force against the edge setting tool, the oscillatingaction of the tool caused more vibration to the operator. By means ofour eccentric movement this vibration is largely and almost entirelyeliminated, the edge burnisher moving almost entirely in an are from thepoint of contact with the work to one side instead of right and left ofthe point of contact, as formerly.

This feature is of the greatest importance as it enables the burnishingto be effected with relatively slight strain on the operator,eliminating the vibration and pressure heretofore required, and alsopermitting the edge setter to run at a lower speed with equaleificiency, thus still further eliminating vibration and strain on theoperator.

We accomplish this desirable result by an eccentric mounting of theoscillating tool-carrier, as will be further explained, and we believethis feature to be distinctly new in this art and, therefore, wish toclaim same herein broadly as applied to any oscillating edge settingmachine.

Also our improvements which facilitates the edge setting operation withless strain and fatigue on the part of the operator is of the greatestimportance in this art.

In carrying out our invention we provide means automatically for thefree-following action of the edge setting tool during the continuoushighspeed oscillations of the same so that it will readily follow theuneven contours presented by a shoe sole. We may utilize either springtension permitting this free-following movement, or gravity, as may bedesired, both forms being herein illustrated.

Referring to the drawings wherein we have illustrated preferredembodiments of our improved edge-setting machine,

Fig. 1 is a front view of the machine embodying our improvements;

Fig. 2 is a cross-sectional view on the line 2-2 of Fig. 1;

Fig. 3 is a fragmentary view illustrating the free-following movement ofthe edge setting tool during the edge setting operation, and

Fig. 4 is a front View and Fig. 5 is a side view of a modificationillustrating the spring tension means.

Fig. 6 is a detailed side view of the tool carrier, looking from theleft of Fig. 1.

Referring to the drawings wherein we have illustrated our presentimproved machine as an apparatus suitable for attachment to a bench orother support 2-2 comprises leg's secured by bolts 33 to the bench I,which legs have forwardly extending fianges 5--5 supporting a frontplate l0 and a rearwardly extending plate |2 in which bearings M for ashaft l5, carrying a pulley l8, are arranged, said plates l9 and I2being set at an angle, as shown in Figs. 2 and 3, to secure the benefitof gravity on the sole edging tool 29, which is mounted on a carrier 25,as will be explained.

Secured to the plate In is a projecting stud 2| which constitutes apivot for the oscillating tool carrier 25, and which stud is alsoutilized to secure the finger-gripping member 22 by a pin 23, combiningwith a bolt 26 to hold the member 22 rigidly on the front plate IE1. Afinger grip 28 attached by a threaded screw 29 to the lower part of themember 22 is also provided,

as is usual, the operator grasping the grip 28 with the finger, orfingers, of one hand to steady his grip upon the shoe 39 as it is heldwith the sole edge 3| in contact against the edge setting tool 20.

The edge setting tool is arranged for quick attachment and detachment byfitting the same to a shouldered portion 24 of the lower part of thecarrier and loosening or tightening a socket screw 33, as clearly shownin Figs. 1, 2, and 3.

In order to oscillate the carrier 25 on the stud 2| we provide a forkedportion in the upper part to engage a stud 36, which latter extends thrua recess 31 in the plate l0 and is fitted on an oscillating lever 38,which lever is adapted to oscillate on a pivot pin 40, and with theupper part also forked as shown at 6| to engage an eccentric 44 on theshaft l5. The pivot is conveniently secured to the plate 45 by havingits inner end threaded and shouldered to receive a retaining nut 42.

In order to hold the pivot pin 48 in rigid and adjusted position andalso affording a further bearing for the shaft I5, we provide an innerplate 45 secured by brackets 58 to the rear frame i2, with a spacingcollar 5? encircling the pivot member iii to appropriately space theseparts and hold the same with the eccentric 44, which latter has a hubreceiving a pin 48 thru the same to key it with the shaft l5.

As thus described it will be seen that the tool carrier 25 rests at anangle against the plate H) but is freely slidable laterally of its lineof oscillation on the stud 2|, thus enabling it to lift from the plateIn and freely follow any unevenness or part of the contour of the soleedge 3| as the operator moves the forepart around and in contact withthe edge setting tool 20, and particularly when it comes to the shankand arch portions, the edge setter and its carrier continually followingthe sole edge during its oscillating in the operation.

Thus, we have provided novel, efficient, and simple means to enable anedge setter to follow the contour of the shoe sole edge while held inthe operators hands instead of as previously, requiring the operator tomake the shoe follow the fixed path of the edge setter, thus greatlyimproving the edge setting operation, decreasing the strain and labor ofthe operator, insuring longer and continuous uniformity of the operatorswork, and eliminating the principal danger of having the sole edgeforced off the edge setting tool, to the consequent injury to both theshoe and the operators hands.

In the modification shown in Figs. 4 and 5, identical construction isutilized so far as the supporting member and oscillating means areconcerned, but in this form we show the face plate vertically positionedand consequently with the oscillating carrier 25 vertically positioned,to which a different form of edge setting tool, viz., a shank iron 50 isattached. In this modified form we may utilize the pivotal studcorresponding to 2| in the previous form, and shown as 5| in Fig. 5, asthe means to carry a spring normally pressing against the carrier 25 butpermitting free following and yielding of the carrier to allow the toolto follow the shoe sole edge contour.

For this purpose we form the pivotal stud 5| for the tool carrier 25 ofsuflicient length to have a threaded portion on the outer end and toreceive thereon a threaded nut 52 with a flange or washer 53 on theinner side of said nut bearing against an encircling spring 55, whichspring has the opposite end bearing against the carrier 25, as clearlyshown in Fig. 5.

The spring 55 is of relatively light tension to permit the carrier 25 tocompress the same as it follows the sole edge and gives the freefollowing capacity desired, to the extent as shown in the dotted linesas 60.

It will thus be seen that in both forms of our present invention we haveprovided means enabling the edge setting tool to follow automaticallyany unevenness in the sole edge of the shoe being operated upon as wellas facilitating the edge setting operation in the shank portion,particularly where high arches are involved.

We find that by our novel method of having the edge setting tool mountedfor movement transversely of the direction of feed of the sole edge thatless strength is required by the operator to hold the sole edge inguiding contact with the said tool and, if desired, a lower speed ofoperation of the tool can be utilized advantageously,

Also, our eccentric mounting of the edge carrier 25 on the stud 2| givesthe oscillations of the edge setter substantially from the lowest pointof contact on the sole edge 3| entirely to one side, viz., to the left,viewed in Fig. 1, thus providing a smooth and continuous arc in contactwith the sole edge, producing an even rocking action from the extremepoint of contact off to one side and then back instead of formerly wherethe sole edge rocked to one side up to a high point and then down andreverse, producing the hammering or jumpy effect, as well as theobjectionable vibration which we have eliminated.

This is a most important feature and, preferably, we also form thesurface of the edge setting tool itself in an appropriate arc tocooperate with the eccentric mounting of the carrier.

We claim:

1. An edge-setting tool of the kind described, including a carrier forsaid tool mounted on a pivot, said carrier normally resting by gravityon said pivot, means to oscillate said carrier about said pivot withprovision for said carrier to lift against its Weight lengthwise of saidpivot during the oscillations, whereby said tool can follow anundulating contour of the sole edge during the edge-setting operation.

2. In a device of the kind described, a mounting for an edge-settingtool, comprising a car rier for said tool mounted to oscillate on apivot at an angle relatively with the vertical plane, said pivot beingpositioned perpendicular to the line of oscillations of the carrier, andconstructed and arranged whereby the carrier will rest by gravity at thelower end of the pivot and allowing the carrier to lift against itsweight during the edge-setting operation.

B. RICHARD BOYSON. B. HERBERT BOYSON.

